高温地下工程混凝土力学性能试验研究

课题通过混凝土基本物理力学性能实验,分析高温地热环境下衬砌混凝土力学性能的影响因素。在混凝土力学性能实验中,分别以温度变化、减水剂、粉煤灰和矿粉的使用情况为变量,得出在70℃高温环境下,添加0.8%减水剂、单掺20%粉煤灰的混凝土力学性能最优的结论。最后从外加剂和掺合料使用方面提出改进混凝土力学性能的方案。

On The Strength of Tunnel Lining Concrete in High Temperature Geothermal

Through the Concrete basic physical and mechanical performance experiments to analyse mechanical properties of lining concrete influence factors.In concrete mechanics performance experiments,set the temperature change,water-reducer, the use of fly ash and alag as variables. Then we draw in 70℃ high temperature environment, added 0.8% water-reducer, only mixed 20% of fly ash concrete mechanics performance optimum conclusion.Finally from the admixture and admixtures useo Puts forward improvement concrete mechanics performance plan.